White Rodgers 1F92W-51 - Manual (Page 28)

28
OPERATING FEATURES
Now that you are familiar with the thermostat display
and buttons, read the following information to learn
about the many features of the thermostat.
• COMPUTED ENERGY MANAGEMENT RE-
COVERY (EMR) - The thermostat’s microcom-
puter automatically calculates the time it will
take to change the temperature to the next
program setting. Then the thermostat will acti-
vate the heating or cooling system to change
the temperature so that the desired tempera-
ture is reached at the beginning of the next
program period. As an example of this feature,
assume that you have programmed your ther-
mostat to provide an overnight heating tem-
perature of 62
°
F, and that during the next pro-
gram period, beginning at 6:00 AM, you have
programmed a temperature of 70
°
F. The ther-
mostat will automatically activate the heating
system at about 5:00 AM, so that the pro-
grammed 70
°
F temperature is reached by about
6:00 AM.
• AUTOMATIC CHANGEOVER — You can set
the thermostat to automatically switch the sys-
tem from heating to cooling as needed. First,
you must move option switch #4 (located on the
back of the thermostat body) to the ON position,
if it has not already been done. To do this, press
SYSTEM
HEAT-OFF-COOL-AUTO
until thermostat is OFF. Then, remove
the thermostat body from the wall. Check the
position of switch #4 (the last switch on the
right). If it is ON (up), simply put the thermostat
back on the wall and restore 24 VAC power. If
the switch is OFF (down), use a pencil or small
screwdriver to move the switch to the ON posi-
tion (see figure at right). Leave the battery out of
the thermostat for at least two minutes, to allow
the thermostat to reset itself. DO NOT MOVE
ANY OTHER OPTION SWITCH, as it may